Dr. Xing Wei recently published two papers in ApJ and ApJL. In the ApJ paper, the magnetic tide was numerically studied in spherical geometry and it is found that magnetic field broadens the tidal resonance and destroys the thin shear layers due to propagation of inertial waves and that Ohmic dissipation dominates over viscous dissipation in the astrophysical situation. Moreover, total tidal dissipation scales as square of magnetic field, which can be used to estimate the internal field strength of binary stars. In the ApJL paper, MHD dynamo induced by a time-periodic helical force was numerically studied. It is found that dynamo is generated near the resonance of force frequency and eigen-frequency of inertial waves. Moreover, the dynamo efficiency is suppressed at the exact resonant frequency because of the nonlinear coupling of fluid flow and magnetic field. This is opposite to intuition and is of help to understanding turbulent dynamo.